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Forming part of a COP26 Global Day of Action, Extinction Rebellion - who have worked with a puppet production company to create a giant, smoldering koala (name'd Blinky), representing the terror our animals are facing in the climate emergency - led a march through St Kilda's Catani Gardens. It was joined by the Red Rebel Brigade, as well as drummers and musicians.
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This group of images: "Nature" is part of an academic work done from nature "objects" bringing by architecture students to the design studio in the University. It's goal is to discover in these objects, some intrinsec caracteristics like: proportion, harmony, geometry, ritm, patron of develop, etc.
We look for undestand such nature virutes to apply them on their own designs.
Some of these images have photographic value by theirsevelsand for this reason I want to share them in this stream
Este conjunto de imagenes: "Nature" forman parte de un trabajo academico hecho a partir de objetos de la naturaleza aportados estudiantes de Arquitectura al taller de diseño en la Universidad y que tiene como objetivo el descubrir en ellos ciertas características implicitas como: proporción, armonía, geometría, ritmo, patrón de desarrollo etc.
Se busca con ello el comprender estas virtudes en la naturaleza para luego aplicarlas a sus propios diseños.
Algunas de estas imagenes tienen valor fotográfico en si mismas y por eso las comparto en esta galería.
Kodak C875
SO: Ubuntu Linux
Software: ShowFoto
Dễ mặc, dễ phối, thoải mái, ấm áp và phong cách là lý do khiến áo sweater luôn là một trong những item được lựa chọn hàng đầu của cả nam và nữ giới mỗi khi đông về.
Mẫu áo sweater form rộng đang được ưa chuộng nhất hiện nay và thể hiện được phong cách thời trang cá nhân rõ nét.
1. Hiểu về áo sweater
Áo sweater là sản phẩm không còn xa lạ gì với các tín đồ thời trang, tuy nhiên dù ra đời khá lâu nhưng món đồ này vẫn giữ nguyên sự hấp dẫn và độ hot của mình.
Đừng bỏ lỡ : www.diigo.com/profile/yodyvn
Có nguồn gốc từ Châu Âu với mục đích nhằm giữ ấm cho cơ thể chống lại cái lạnh của mùa đông, sau đó sweater unisex đã dần được cải tiến để trở nên thời thượng hơn và dần được ưa chuộng trên nhiều quốc gia trên thế giới.
Theo thời gian, áo nỉ sweater luôn nằm trong top các sản phẩm nhận được lượng tìm kiếm nhiều nhất bởi sự đa năng có thể kết hợp với nhiều loại item cho ra các phong cách khác nhau, đồng thời thể hiện cá tính riêng của người mặc nó.
2. Các kiểu áo sweater
Thời tiết se lạnh, áo sweater chính là sự lựa chọn tuyệt vời để vừa giúp giữ ấm cho cơ thể, vừa thể hiện phong cách cá nhân một cách cụ thể nhất.
Dù bạn là một người ưa chuộng phong cách đơn giản, thanh lịch hay cá tính thì sweater nam, sweater nữ, áo sweater chính hãng đều có thể đáp ứng được. Khám phá ngay các loại áo sweater đang thịnh hành nhất hiện nay nhé.
2.1 Áo sweater oversize
Áo sweater oversize gây ấn tượng với cả nam và nữ giới từ những mẫu áo sweater trơn cho đến các thiết kế đa dạng và phá cách về chất liệu cũng như họa tiết. Chiếc áo phù hợp để nàng tôn thêm sự nữ tính, ngọt ngào cũng như che chắn khuyết điểm vòng eo bánh mỳ đầy khéo léo khi mix cùng chiếc váy nhẹ nhàng xinh xắn hay giúp chàng thoải mái tự tin cho mọi hoạt động khi phối cùng quần jeans, jogger, baggy,...
Xem ngay : yody.vn/top-5-mau-ao-sweater-form-rong-dang-duoc-ua-chuon...
2.2 Áo sweater form rộng dáng gile
Nếu bạn là người yêu thích phong cách thời trang Hàn Quốc thì chắc chắn mẫu áo sweater gile sẽ là lựa chọn không thể bỏ qua. Áo sweater vintage kiểu này có thể kết hợp với rất nhiều trang phục như: phối sơ mi để đi học, đi làm công sở; nàng mix cùng váy để checkin vào mùa đông ấm áp; chàng phối áo phông quần jeans tạo nên set đồ đơn giản mà sành điệu để đi cafe cùng bạn bè.
Với thiết kế đa dạng khiến áo sweater vô cùng được săn đón và làm mưa làm gió trên thị trường. Một lần nữa, phong cách này tiếp tục gây sốt với thời trang của giới trẻ năm 2022.
#yodyvn
FORMS OF HANDS 15
24th - 25th April 2015
Bönen (Ruhr area/Germany)
Winterkälte
Ah Cama-Sotz
Ancient Methods
Synth-Etik
S.K.E.T.
Maschinenkrieger KR52 vs. Disraptor
Totakeke
13th Monkey
Hysteresis
Illegal Trade
Norm
Sylvgheist Maelström
Yurayura
Supersimmetria
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De uma forma discreta, “Thelma” é um filme muito inteligente, cujo ácido e perspicaz desfecho permite extrair ao menos duas mensagens evidentes – para além, é claro, das subliminares.
O longa é protagonizado por uma jovem norueguesa que se muda para a capital para estudar, afastando-se de seus pais. Porém, sua nova rotina é rapidamente abalada por uma paixão e por seus enigmáticos poderes sobrenaturais.
Já do enredo é possível concluir: é um filme que não se encaixa adequadamente em gênero algum. O diretor (e corroteirista) Joachim Trier (“Mais Forte que Bombas”) é certeiro ao fincar sua obra no fenômeno da miscigenação dos gêneros, não se podendo rotular adequadamente a produção em nenhum deles, já que existem momentos de drama, romance, ficção e horror no longa.
Trier tem uma referência muito clara: “Carrie, a Estranha”, de 1976. Como se sabe, um terror clássico, dirigido por Brian De Palma e baseado na obra de Stephen King. Episodicamente, há outra referência não distante: o suspense de 1963 “Os Pássaros”, dirigido por Alfred Hitchcock. Com efeito, há um clima de mistério, inclusive por não se saber o verdadeiro potencial dos poderes de Thelma. A mise en scène do suspense é bem construída, gerando cenas tensas, em especial no apoteótico clímax.
O roteiro, como não poderia deixar de ser, acompanha essa lógica. O prólogo, por exemplo, só faz sentido a partir da segunda metade da película, quando flashbacks preenchem a trama – do contrário, os primeiros minutos são, isoladamente, belos do ponto de vista estético e espantosos do ponto de vista semântico. Ainda assim, o avanço da narrativa dá pistas sobre o que a sequência reserva: a criação rigidamente religiosa e o monitoramento constante dos pais, em face da vida de Thelma, fazem total sentido naquele contexto.
Aliás, tudo vai ganhando explicações, com uma protagonista que se torna cada vez mais compreensível. O mérito é também da atriz Eili Harboe (“A Onda”), que exibe bem a progressão da personalidade de Thelma. Nesse sentido, os diálogos sobre temáticas religiosas parecem periféricos, inclusive quando a personagem é estimulada a profanar sua própria fé (antes ortodoxa), todavia, é outro elemento do texto com função essencial. Existe até mesmo uma passagem histórica, totalmente conexa com a trama, mencionando a perseguição às “bruxas” no período medieval.
É extremamente difícil fazer uma análise densa de “Thelma” sem incorrer em spoilers. Trata-se de um filme rebuscado que, para ser mais bem abordado, demanda um exame de algumas passagens expositivas da trama. Portanto, fica o alerta que, no próximo parágrafo, poderão haver algumas leves revelações no presente texto.
O pecado está simbolicamente sempre à espreita da protagonista, através da metáfora da cobra, aproximando-se dela em algumas cenas. Afinal, na visão cristã (e Thelma é cristã), a serpente é associada ao pecado. Porém, isso é enxergar o óbvio. A cena em que Thelma tem uma alucinação com a cobra, por outro lado, carece de uma interpretação mais apurada, é uma passagem paradigmática na produção. Do ponto de vista psicanalítico, a metáfora se refere a uma experiência sexual vivida por Thelma, heterossexual – mais precisamente, uma referência ao sexo oral –, que ela, mecanicamente, rejeita. Ou seja, não existe um elemento volitivo, é mais forte que ela. Evidentemente, é apenas uma interpretação, dentre as incontáveis possíveis.
Com um grand finale, “Thelma” é um filme diferenciado, inteligente, que sabe discursar com elegância. Entende que um possível caminho para defender uma causa e/ou criticar um grupo é na sutileza de seu texto, principalmente através de metáforas. É um filme que talvez parcela do público não vai compreender, já que poucos são concebidos dessa forma.
_cinema com rapadura
One of a series of works which echo or mimic organic forms: Series here: www.flickr.com/photos/david_lewis_baker_arts/sets/7215762...
© All Rights Reserved - No Usage Allowed in Any Form Without the Written Consent of Connie Lemperle/ lemperleconnie or the Cincinnati Zoo & Botanical Garden
Link to Cincinnati Zoo..............Malayan Tiger ----- Hutan ---- Beautiful mother of four cute tiger cubs. Pictured here with two.
One of six living subspecies of tiger, the Malayan tiger wears the characteristic striping pattern of black stripes on orange and white that provides excellent camouflage in the forest. Using its quiet stalking ability, a tiger will ambush large prey, often pouncing on it from the rear. Other than females with their young, tigers are solitary and come together only to mate. Each tiger defends its own territory from others of the same gender. Territories must be large to provide enough prey for a tiger to eat. As more and more forests disappear, tigers struggle to maintain a territory with sufficient prey.
A tiger may travel up to 20 miles a night in search of prey.
Unlike most cats, tigers seem to enjoy swimming and soaking in water.
A tiger’s roar can be heard up to two miles away.
One out of every 10,000 tigers will lack the orange coloring. These white tigers are not albinos; they simply express a recessive gene.
Fact File
Length: 7.6 to 9.3 ft
Weight: 220 to 400 lbs
Lifespan: 15 yrs in wild
Habitat: Forest
Prey: Deer, wild pigs, and cattle
Status: Species at Risk (IUCN—Endangered)
Note ________________________________________________________________
Well here I go again posting more tiger pictures. I hope you all don't mind. You have to be getting bored seeing so many. I am posting a lot for the zoo so I don't have any choice. Speaking of the zoo, I'll be going there tomorrow. I hope to get more tiger pictures but also plan to get some shots of the other animals. I will be having a hard time visiting all of your photostreams but soon things should settle down so that I can. Thanks so much everyone for everything. Have a nice night! Hugs!
Uncropped photo
I actually have these photos out of the proper sequence sorry to say. Mom was nursing the two cubs and than gives her goodbye kiss to her cubs. These cubs already have very sharp teeth so it won't be long before mom says goodbye to nursing for good.
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Ely Cathedral is in the top rank of the great English cathedrals, and indeed earns its place among the best of medieval churches internationally for its unique architecture and astonishing beauty. It is a church I've visited several times over the years and never fails to impress, its form at once imposing and strikingly individual. Owing to the flatness of the surrounding countryside it is visible from afar as a major landmark, which makes approaching this tiny city all the more enticing.
The church was founded as an abbey by St Etheldreda in 672 and didn't achieve cathedral status until the foundation of the diocese in 1109. Much of the present building dates from the following years, with the nave and transepts still substantially as they were built (aside from a few altered windows and later ceilings) and a fine example of Norman / Romanesque architecture. A little later during the 1170s the soaring west tower and western transepts were added which would have created a magnificent facade when complete and of a type rarely seen in this country. The style is richer with more use of ornamentation than before, but also many of the arches (particularly the upper parts of the tower) are pointed, making it an early example of the transition to Gothic (the octagonal top storey is from two centuries later, but follows the original overall plan in form, if not detail). The north-west transept however collapsed in the late 15th century and was never rebuilt, leaving the front of the cathedral will the curiously lopsided but not unattractive west front we see today. The Galilee porch that projects from the base of the tower dates from the beginning of the 13th century, only a few decades later but now fully Gothic in style.
The Norman eastern limb had been fairly short so the next major building phases saw the great eastward extension of the presbytery built in Gothic style in 1234-50. It makes an interesting contrast with the earlier parts of the building being so rich in style, externally punctuated with pinnacles and flying buttresses and profusely ornamented withing, making the Romanesque nave and transepts seem somewhat austere by comparison. Then in 1321 an ambitious new lady chapel was begun at the north-east corner, but soon afterwards work was delayed by unforeseen events.
In 1322 the old Norman central tower collapsed, bringing down with it most of the old Romanesque choir (but not the recently built presbytery beyond). The aftermath left the cathedral with a gaping hole at its heart, but this must have inspired those charged with its recovery, and under the direction of Alan of Walsingham the crossing was rebuilt in a unique way; rather than build a new tower of a similar form the central piers that supported it were entirely cleared away along with the adjoining bay of nave, transepts and choir to create a much larger octagonal central space. This then rose to become the unique central tower that Ely is so famous for, the Octagon, a combination of a lower octagonal tower built of stone crowned by a delicate lantern built of wood and covered with lead externally. The result is an incredible, piece of architecture, and the view inside of the open space rising to the curved vaults above on which the glazed lantern appears to float is unforgettable.
After the Octagon and beautifully spacious and richly adorned Lady Chapel were completed there was no more major work at the cathedral. The transept roofs were replaced in the 15th century with the wooden hammerbeam structures we see today, adorned with large angel figures in the East Anglian tradition. The most significant late medieval additions are the two sumptuously decorated chantry chapels built within the end of each choir aisle, each a riot of later medieval ornament and Bishop West's also being remarkable for its fusion of Gothic and Renaissance detail. The cloister appears to have been rebuilt at a similar stage though sadly very little of it survives today.
Sadly the Reformation saw a wave of iconoclasm of particular ferocity unleashed here in Ely. The most telling reminder is the Lady Chapel with its richly ornamented arcading carved with hundreds of small scenes and figures, all brutally beheaded (not a single head survives). Free standing statues in niches have all gone without trace, but in the case of Bishop West's chantry chapel the topmost figures were carved in relief, so these were hammered away leaving the mutilated remains as a testament to zealotry and intolerance. Most of the stained glass appears to have also been removed around this time, so there was surprisingly little damage here during the Civil War a century later as the Puritan frenzy had already been unleashed.
A corner of the north transept collapsed in 1699 but was rebuilt almost identically, a rare early example of such an exacting approach to reconstruction. The classical form of a window and doorway below are the only reminders of the rebuilding, some say with advice from Christopher Wren whose uncle had been bishop here decades earlier (Wren knew the cathedral as a result, and the Octagon is believed to have inspired his plans for St Paul's, as the ground plans of the Octagon and his domed central space at St Paul's are remarkably similar).
The cathedral saw further changes in the 18th century when the structure was in need of repair. James Essex was called in to repair the Octagon and the wooden lantern was stabilised but its external was appearance simplified by stripping away much of its original detail. The medieval choir stalls had originally sat directly underneath the Octagon with painted walls on either side, but these were removed at this time and the stalls relocated further east to the position they are in now. Sadly the Norman pulpitum screen at the end of the nave was also removed (the earliest of its kind to survive in any cathedral).
By the mid 19th century tastes had changed again and the Victorian preference for richness over Georgian austerity saw the cathedral restored under the direction of George Gilbert Scott. He restored the Octagon lantern to something much closer to its original appearance and added new screens at the crossing and behind the altar. Stained glass gradually filled the cathedral again and it remains one of the richest collections of Victorian glass in the country. The ceiling of the nave which had been left plain for centuries was given a new richly painted finish with scenes from the Old & New Testaments, begun by Henry le Strange but finished by Thomas Gambier Parry after the former had died halfway through the project. Gambier Parry also undertook the lavish redecoration of the interior of the Octagon lantern.
The cathedral has remained little changed since and is one of the rewarding in the country. There is much of beauty to enjoy here beyond the architecture, with many interesting tombs and monuments from the medieval and post-Reformation periods. There is a wealth of stained glass of unusual richness; not everyone appreciates Victorian glass (indeed Alec Clifton Taylor was quite scathing about the glass here) but while it is very mixed I find much of it is of remarkably high quality.
Since 1972 the Stained Glass Museum has been housed in the nave triforium (originally on the north side, it was later transferred to the south where it currently remains). This is the only collection in the country solely devoted to the medium and is a great ambassador for it, with fine pieces covering a range of styles and illustrating the development of the art through the various backlit panels on show in the gallery.
Visitors can usually take tours to ascend the Octagon and even the west tower on more select days. Tours do get booked up though so it took me many visits before I could make my ascent, but happily this time I finally managed it and it was a wonderful experience I won't forget. Frustratingly I was unable to ascend the west tower since I was at a symposium on the day when tours were held so I hope to have better luck next time.
For more historical detail and context see below:-
en.wikipedia.org/wiki/Ely_Cathedral
For entry fees and tower tours see the cathedral's website below:-
Dorothy Gillespie 'Colors and Forms in Flight', 1989, Fort Lauderdale/Hollywood International Airport, Fort Lauderdale, Florida
Luminosos - Letras de Caja - Corpóreos - Formas con Volumen - Letreros - Rótulos exterior - Textos con relieve
(Rótulos Bia) Pamplona-Navarra
Pictures of the the Vanarama National League North clash at The Impact Arena between Alfreton Town & Darlington.
The game finished in a 1-1 draw in front of 727.
Quakers took the lead on 8 minutes. Styche put the Alfreton left back under pressure, the defender slipped and Styche ran into the box and coolly fired across the keeper into the net. Styche ran 80 yards to celebrate in front of the Darlo fans. it looked like Darlo might hang on to 3 crucial points until an injury time altercation in Darlo penalty area resulted i nthe dismissal of on loan custodian Taklbot and a penalty to the home side which was dispatched without delay.
THe penaltwas at the far end and in the bets Arsen Wenger style I didnt see the incident.
This point means Darlo remain in the rlegation zone a point form safety but they have stopped the recent rot. Things need to impriove. Quickly.
Ipê-Roxo Bola (Tabebuia impetiginosa) -
Pau D'Arco Bark.
Recebe este nome em razão da forma de seus cachos de flores. Chega a atingir cerca de 8 a 12 metros de altura, dotada de copa alongada, tronco ereto de 60-90 cm de diâmetro com folhas compostas 5-folioladas e quando florido perde suas folhas. É encontrado desde o Piauí até Minas Gerais, Goiás e São Paulo, em geral nas regiões de cerrado e caatinga. Floresce nos meses de maio a agosto. Existem, ainda, outras espécies de ipê roxo, como o T. heptaphylla.Sua Madeira é muito pesada (densidade 0,96g/cm3) muito dura ao corte, resistente ao ataque de organismos xilófagos.
Nomes populares:
Ipê-roxo, Pau-d’arco-roxo, Ipê-roxo-de-bola.
Ipê roxo (Tabebuia avellanedae)
Nomes populares: ipê-roxo, pau-d’arco-roxo, ipê-roxo-da-mata, ipê-preto, ipê-rosa, ipê-comum, ipê-cavatã, lapacho, peúva, piúva.
Sabe-se que o ipê-roxo é a Tabebuia avellanedae, porém é muito comum haver confusão com a Tabebuia pentaphylla (ipê-rosa), inclusive alguns autores consideram a Tabebuia avellanedae e a Tabebuia impetiginosa da mesma espécie.
É o primeiro dos Ipês a florir no ano, inicia a floração em Junho, e pode durar até Agosto, conforme a árvore. Esta espécie se confunde bastante com outras também de flor roxa, como a Tabebuia impetiginosa e a Tabebuia heptaphylla, sendo considerado por alguns autores que a T. avellanedae e a T. impetiginosa seriam a mesma espécie. São muito utilizadas no paisagismo urbano, por sua beleza e desenvolvimento rápido.
É também utilizado contra as estomatites, úlceras de garganta e anemia. Anti-inflamatório, anti-cancerígeno, eczema.
O ipê (Ipê, em tupi-guarani, significa "árvore de casca grossa" e tabebuia é "pau" ou "madeira que flutua") - muitas vezes chamado de pau-d’arco - possui propriedades medicinais,sendo a casca em estudo para tratamentos. É apreciado pela qualidade de sua madeira, além de servir para fins ornamentais e decorativos. A árvore do ipê é alta, podendo chegar até 30 m (na cidade , em locais abertos chega a cerca de 10-15 m), bem copada e na época de floração perde totalmente as folhas para dar lugar às flores das mais variadas cores (brancas, amarelas roxas ou rosa) com belas manchas coloridas. É uma arvore originária do cerrado, não precisando de muita água, apenas no começo. É uma das árvores homologadas para plantio pelo fato de possuir raiz pivotante( para baixo), sem quebrar a calçada. Recomenda-se o plantio aonde haja bastante espaço para cima. Floresce no período de julho a setembro e frutifica de setembro a outubro. Destas sementes, que secam e abrem as vagens só nascem se estiverem secas. Os diversos tipos de ipê recebem os nomes conforme as cores de suas flores ou madeira. Os que mais se destacam são os seguintes: ipê-amarelo ou ipê comum, ipê-tabaco, ipê-branco, ipê-roxo ou ipê-rosa. Por muito tempo, o ipê foi considerado a árvore nacional brasileira. Contudo, no dia 7 de dezembro de 1978, a lei nº 6507 declara o pau-brasil a Árvore Nacional e, a flor do ipê, a flor do símbolo nacional.
Identifique seu Ipê:
* Amarelo : Folhas felpudas, pequenas em geral em formação de folhas por ramo.
* Roxo : Folhas lisas, as vezes serrilhadas na ponta, crescimento rápido.
* Branco : Folhas arredondadas.
* Rosa : Folhas grandes e suculentas ,talos verdes. crescimento rápido.A seguir, Texto, em português, do site "Catalão Notícias", que pode ser acessado no endereço portalcatalao.com.br/catalaonoticias/category_news.asp?ID...
Nesta época do ano, em que já se instala a “estação da seca” em Brasília, percebe-se em toda a parte o aumento de cores na vegetação. O sol pleno, entremeado pelo sibilar do vento frio, colabora com a natureza, fazendo desabrochar flores por toda parte, como se quisessem compensar-nos pela chegada da aridez desértica do inverno. De fato, tanta beleza nos distrai e nos alimenta com coragem para resistir bravamente à adversidade do clima, nos próximos cinco meses.
Uma das mais belas espécies que enfeitam a região é o ipê, adjetivado de acordo com a cor das suas flores. Há ipê amarelo, branco, rosa... Mas o mais famoso deles é o ipê roxo, cujo nome científico é Tabebuia avellanedae, com características muito interessantes. Por causa da sua coloração rosa e lilás intensos, é muito bem vindo em praças, jardins públicos e na arborização de ruas, avenidas, estradas e alamedas e também na recomposição da mata ciliar. Apesar de ser indicada para arborização urbana, não se recomenda plantar essa árvore em calçadas estreitas, com menos de dois metros e meio de largura, em locais com fiação aérea e ausência de recuo predial, porque a espécie atinge, na fase adulta, de cinco a oito metros de altura, com o raio da copa variando em torno de quatro a cinco metros.
Pouco antes da floração, suas folhas caem e surgem, no ápice dos ramos, magníficas panículas com numerosas flores tubulosas, perfumadas e atrativas para abelhas e pássaros. Por causa dessa formação tão parecida com bolas de flores nos galhos, os botânicos, que a descreveram pela primeira vez, deram-lhe o nome de 'árvore buquê'.
Vaidoso, o ipê roxo sai na frente dos de outras cores, mostrando sua beleza do início de junho até o final de setembro e, ainda, frutifica de julho a novembro. Versátil, adapta-se bem ao clima tropical úmido e subúmido, com inverno seco, mas sobrevive também no clima subtropical, com verão quente. Tem preferências por temperaturas entre 18 a 26 graus centígrados.
Mas, não é só de aparência que vive essa espécie. Praticamente toda a árvore produz e fornece matéria prima de excelente qualidade, que tem surpreendentes aplicações.
O tronco do ipê roxo tem sido utilizado em larga escala na construção civil, para confeccionar dormentes, tacos, portais, postes, eixos de roda, vigas; na construção naval como quilhas de navio; no mobiliário em geral, em batentes e degraus de escadas; em instrumentos musicais, bolas de boliche, entre outros.
Da casca, são extraídos ácidos, sais alcalinos e corante, que é usado para tingir algodão e seda, sem contar que está entre os produtos amazônicos mais procurados, com reconhecido poder medicinal.
Da entrecasca faz-se um chá que é usado no tratamento de gripes e depurativo do sangue.
As folhas são utilizadas contra úlceras sifilíticas e blenorrágicas. A espécie também tem propriedades anti-reumáticas e anti-anêmicas.
É tido como um poderoso auxiliar no combate a determinados tipos de tumores cancerígenos. É usado também como analgésico e como auxiliar no tratamento de doenças estomacais e da pele.
A extração predatória, realizada durante anos, quase levou a espécie à extinção. Devido à atuação governamental, reclamada pela comunidade científica, a produção, em princípio, é protegida, explorada e comercializada com a observância de critérios adequados. Um dos produtos mais importantes extraído do ipê roxo é o Lapachol, marca do princípio ativo naftoquinona, com reconhecida ação antiinflamatória, analgésica, antibiótica e antineoplásica [ataca qualquer tumor, benigno ou maligno].
O Laboratório Estatal de Pernambuco [Lafepe] é o proprietário da marca Lapachol desde 1978. Mas em 1969, já produzia e comercializava o produto como auxiliar no tratamento do câncer. Atualmente, a estatal pernambucana tem acordo com o Hospital Sírio Libanês, de São Paulo, na pesquisa de ensaios clínicos em seres humanos em tratamento de câncer, primordialmente o câncer de próstata.
Tão admirado pelos visitantes e transeuntes, cantado em versos e lido nas costumeiras crônicas da cidade, o Ipê Roxo já faz parte da tradicional paisagem brasiliense. Emociono-me diante dessa maravilha, carregada de flores cada vez mais belas, nas Quadras e Entrequadras, ao longo do Eixão, nos Parques e Chácaras que rodeiam a cidade, especialmente agora, quando contrasta com o brilho azulado e intenso do céu e o heróico e persistente verde dos gramados. É bom saber que ele só sairá de cena para dar lugar às bem aventuradas chuvas tardias da primavera, lá pelo mês de outubro.
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Link to Cincinnati Zoo..............Malayan Tiger ----- Hutan ---- Beautiful mother of four cute tiger cubs. Pictured here with two.
One of six living subspecies of tiger, the Malayan tiger wears the characteristic striping pattern of black stripes on orange and white that provides excellent camouflage in the forest. Using its quiet stalking ability, a tiger will ambush large prey, often pouncing on it from the rear. Other than females with their young, tigers are solitary and come together only to mate. Each tiger defends its own territory from others of the same gender. Territories must be large to provide enough prey for a tiger to eat. As more and more forests disappear, tigers struggle to maintain a territory with sufficient prey.
A tiger may travel up to 20 miles a night in search of prey.
Unlike most cats, tigers seem to enjoy swimming and soaking in water.
A tiger’s roar can be heard up to two miles away.
One out of every 10,000 tigers will lack the orange coloring. These white tigers are not albinos; they simply express a recessive gene.
Fact File
Length: 7.6 to 9.3 ft
Weight: 220 to 400 lbs
Lifespan: 15 yrs in wild
Habitat: Forest
Prey: Deer, wild pigs, and cattle
Status: Species at Risk (IUCN—Endangered)
Note ________________________________________________________________
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Custom metal forming equipment used in the process of bending steel sheet metal coil in to metal parts. Industrial roll forming machinery manufactured by Metform International
aqilla, my friend arief and wanti's son, writing down the number of fishes in front of him at canberra center.
Collalba gris
Oenanthe oenanthe
Familia: Muscicápidos – Muscicapidae
Aspecto: Ave pequeña, activa, con rabadilla y cola llamativas, de color blanco, con manchas negras que forman una T invertida amplia, distintiva, en la punta de la cola. Las alas son oscuras por debajo, y la parte superior es de color marrón oscuro uniforme (en las hembras) o negro (en los machos).
Tamaño: Largo 14-16 cm, peso 19-29 g.
Nido: Entre rocas, en un muro de piedra, un agujero de un edificio o en montones de leña. Hecho de forma holgada de paja, hojas y musgo, recubierto con pelo, paja y plumas.
Reproducción: Pone 3 a 8 huevos en mayo, incubados principalmente por la hembra durante 11 a 16 días. Los polluelos permanecen en el nido durante 14 a 16 días, y aprenden a volar bastante pronto después de dejar el nido.
Distribución: Se reproduce en hábitats abiertos en toda Finlandia, pero su número es mayor en el norte. La población reproductora finlandesa se estima en 50.000 a 100.000 parejas. Su número ha disminuido recientemente.
Migración: Nocturna. Vuela al sur de agosto a septiembre, regresa de abril a mayo. Pasa el invierno en África tropical.
Alimentación: Invertebrados.
Sonidos: Un silbido agudo “hyee”, y un sonido como un chasquido “chak”, que a menudo emite en sucesión. Canto rápido, entusiasta y alegre, con algunas frases crepitantes y forzadas.
La collalba gris está clasificada como especie vulnerable en Finlandia, debido a la disminución reciente en el número de ejemplares.
La collalba gris pertenece al gran grupo de paserinos (aves de percha), aunque vive principalmente en el suelo. La mancha amplia en forma de T invertida de la cola, por lo demás blanca, es una buena característica distintiva del ave en todos sus plumajes. Además, las alas son notablemente oscuras por debajo, y la parte superior es de color marrón oscuro uniforme (en las hembras) o negro (en los machos). En verano, los machos tienen el capuchón y el dorso de color gris ceniza, el pecho y la garganta de color naranja claro, el abdomen de color blanco y una raya negra en el ojo que se vuelve más amplia más atrás, en sus mejillas.
Las hembras y las aves jóvenes son de color más apagado que los machos, con el dorso, las cobertoras alares y las mejillas de color pardusco. La collalba gris tiene el pico y las patas de color negro, y el iris marrón oscuro. Las aves que se reproducen en el norte de Canadá y Groenlandia, y pasan el invierno en el otro lado del Atlántico, en África, se encuentran entre las aves que realizan las migraciones anuales más largas.
Pure White Form Early Marsh Orchid (Dactylorhiza incarnata Var. leucantha) in the New Forest, Hampshire England
I uploaded a shot of a Sminthurinus globular springtail earlier, but couldn't decide what species it was. Just knew I hadn't seen anything looking quite like it before. Frans Janssens advised me that it was a pale form of Sminthurinus igniceps. I hadn't realised that such a form existed!
I went back to the original images and found that I had taken some more. Pretty sure these are the same individual. These are heavily-cropped versions to show some anterior and posterior detail for anyone that's interested!
Canon MP-E 65mm (at x5) + 1.4x Extender + MT24-EX Flash. Cropped heavily
Naturally formed ice that occurs in Tennessee at below freezing temperatures,i call them ice flowers!The formation of frost flowers, also known as "ice flowers," is apparently dependent on a freezing weather condition occurring when the ground is not already frozen. The sap in the stem of the plants will expand (water expands when frozen), causing long, thin cracks to form along the length of the stem. Water is then drawn through these cracks via capillary action and freezes upon contact with the air. As more water is drawn through the cracks it pushes the thin ice layers further from the stem, causing a thin "petal" to form. In the case of woody plants and (living or dead) tree branches the freezing water is squeezed through the pores of the plant forming long thin strings of ice that look uncannily like hair i.e. "frost beard".
The petals of frost flowers are very delicate and will break when touched. They usually melt or sublimate when exposed to sunlight and are usually visible in the early morning or in shaded areas.
Forming part of a COP26 Global Day of Action, Extinction Rebellion - who have worked with a puppet production company to create a giant, smoldering koala (name'd Blinky), representing the terror our animals are facing in the climate emergency - led a march through St Kilda's Catani Gardens. It was joined by the Red Rebel Brigade, as well as drummers and musicians.
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An entryway in Ia, Santorini, Greece. Looking at form as the primary design element, when there isn't strong color contrast.
This image is part of the Exploring with a Camera series on my blog, focusing on Finding Form.
This image forms part of the digitised photographs of the Ross and Pat Craig Collection. Ross Craig (1926-2012) was a local historian born in Stockton and dedicated much of his life promoting and conserving the history of Stockton, NSW. He possessed a wealth of knowledge about the suburb and was a founding member of the Stockton Historical Society and co-editor of its magazine. Pat Craig supported her husband’s passion for history, and together they made a great contribution to the Stockton and Newcastle communities. We thank the Craig Family and Stockton Historical Society who have kindly given Cultural Collections at the University of Newcastle, NSW, Australia, access to the collection and allowed us to publish the images. Thanks also to Vera Deacon for her liaison in attaining this important collection.
Please contact Cultural Collections at the University of Newcastle, NSW, Australia, if you are the subject of the image, or know the subject of the image, and have cultural or other reservations about the image being displayed on this website and would like to discuss this with us.
Some of the images were scanned from original photographs in the collection held at Cultural Collections, other images were already digitised with no provenance recorded.
You are welcome to freely use the images for study and personal research purposes. Please acknowledge as “Courtesy of the Ross and Pat Craig Collection, University of Newcastle (Australia)" For commercial requests please consider making a donation to the Vera Deacon Regional History Fund.
These images are provided free of charge to the global community thanks to the generosity of the Vera Deacon Regional History Fund. If you wish to donate to the Vera Deacon Fund please download a form here: uoncc.wordpress.com/vera-deacon-fund/
If you have any further information on the photographs, please leave a comment.
Consuegra - 52 Fiesta de la Rosa del Azafrán 2014
- Grupo de Danzas “Villa del Escorial” (Madrid)
- Grupo Amigos de la Jota (Teruel) - Coros y Danzas de Lorca (Murcia)
- Coros y Danzas "Rosa del Azafrán". Consuegra (Toledo)
Autor: José-María Moreno García. Fotógrafo humanista y documentalista.Cronista Oficial de la Villa de Madridejos.
Una de las mejores formas de conocer la historia de un pueblo es a través de sus imágenes; en ellas se conserva no sólo su realidad tangible, calles, plazas, monumentos, si no también sus costumbres, fiestas, tradiciones, lenguaje, indumentaria, gestos y miradas, que nos dicen sin palabras como se vivía, cuales eran sus esperanzas y temores, qué había en su pasado, qué esperaban del futuro. Uno de los objetivos más ambiciosos es recuperar y catalogar todo el material gráfico existente en nuestra familia desde 1.915, para después ponerlo a disposición de vosotros, que la historia volviera a sus protagonistas, y los que aún siguen con nosotros pudieran disfrutar con ello. VISITA La colección "CIEN AÑOS DE FOTOGRAFÍA FAMILIA MORENO (1915-2015)" en www.josemariamorenogarcia.es y www.madridejos.net
SI ALGUIEN NO DESEA APARECER EN EL ÁLBUM POR FAVOR COMUNÍCALO A josemariamorenogarcia@gmail.com
Like building blocks, these are lined up in rows and concrete is poured between the two pieces of white styrofoam to produce a strong, solid wall with excellent insulation properties
Fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and rays to the abundant and diverse bony fishes. Most fish species are cold-blooded; however, one species, the opah (Lampris guttatus), is warm-blooded.
The term fish is applied to a variety of vertebrates of several evolutionary lines. It describes a life-form rather than a taxonomic group. As members of the phylum Chordata, fish share certain features with other vertebrates. These features are gill slits at some point in the life cycle, a notochord, or skeletal supporting rod, a dorsal hollow nerve cord, and a tail. Living fishes represent some five classes, which are as distinct from one another as are the four classes of familiar air-breathing animals—amphibians, reptiles, birds, and mammals. For example, the jawless fishes (Agnatha) have gills in pouches and lack limb girdles. Extant agnathans are the lampreys and the hagfishes. As the name implies, the skeletons of fishes of the class Chondrichthyes (from chondr, “cartilage,” and ichthyes, “fish”) are made entirely of cartilage. Modern fish of this class lack a swim bladder, and their scales and teeth are made up of the same placoid material. Sharks, skates, and rays are examples of cartilaginous fishes. The bony fishes are by far the largest class. Examples range from the tiny seahorse to the 450-kg (1,000-pound) blue marlin, from the flattened soles and flounders to the boxy puffers and ocean sunfishes. Unlike the scales of the cartilaginous fishes, those of bony fishes, when present, grow throughout life and are made up of thin overlapping plates of bone. Bony fishes also have an operculum that covers the gill slits.
The study of fishes, the science of ichthyology, is of broad importance. Fishes are of interest to humans for many reasons, the most important being their relationship with and dependence on the environment. A more obvious reason for interest in fishes is their role as a moderate but important part of the world’s food supply. This resource, once thought unlimited, is now realized to be finite and in delicate balance with the biological, chemical, and physical factors of the aquatic environment. Overfishing, pollution, and alteration of the environment are the chief enemies of proper fisheries management, both in fresh waters and in the ocean. (For a detailed discussion of the technology and economics of fisheries, see commercial fishing.) Another practical reason for studying fishes is their use in disease control. As predators on mosquito larvae, they help curb malaria and other mosquito-borne diseases.
Fishes are valuable laboratory animals in many aspects of medical and biological research. For example, the readiness of many fishes to acclimate to captivity has allowed biologists to study behaviour, physiology, and even ecology under relatively natural conditions. Fishes have been especially important in the study of animal behaviour, where research on fishes has provided a broad base for the understanding of the more flexible behaviour of the higher vertebrates. The zebra fish is used as a model in studies of gene expression.
There are aesthetic and recreational reasons for an interest in fishes. Millions of people keep live fishes in home aquariums for the simple pleasure of observing the beauty and behaviour of animals otherwise unfamiliar to them. Aquarium fishes provide a personal challenge to many aquarists, allowing them to test their ability to keep a small section of the natural environment in their homes. Sportfishing is another way of enjoying the natural environment, also indulged in by millions of people every year. Interest in aquarium fishes and sportfishing supports multimillion-dollar industries throughout the world.
Fishes have been in existence for more than 450 million years, during which time they have evolved repeatedly to fit into almost every conceivable type of aquatic habitat. In a sense, land vertebrates are simply highly modified fishes: when fishes colonized the land habitat, they became tetrapod (four-legged) land vertebrates. The popular conception of a fish as a slippery, streamlined aquatic animal that possesses fins and breathes by gills applies to many fishes, but far more fishes deviate from that conception than conform to it. For example, the body is elongate in many forms and greatly shortened in others; the body is flattened in some (principally in bottom-dwelling fishes) and laterally compressed in many others; the fins may be elaborately extended, forming intricate shapes, or they may be reduced or even lost; and the positions of the mouth, eyes, nostrils, and gill openings vary widely. Air breathers have appeared in several evolutionary lines.
Many fishes are cryptically coloured and shaped, closely matching their respective environments; others are among the most brilliantly coloured of all organisms, with a wide range of hues, often of striking intensity, on a single individual. The brilliance of pigments may be enhanced by the surface structure of the fish, so that it almost seems to glow. A number of unrelated fishes have actual light-producing organs. Many fishes are able to alter their coloration—some for the purpose of camouflage, others for the enhancement of behavioral signals.
Fishes range in adult length from less than 10 mm (0.4 inch) to more than 20 metres (60 feet) and in weight from about 1.5 grams (less than 0.06 ounce) to many thousands of kilograms. Some live in shallow thermal springs at temperatures slightly above 42 °C (100 °F), others in cold Arctic seas a few degrees below 0 °C (32 °F) or in cold deep waters more than 4,000 metres (13,100 feet) beneath the ocean surface. The structural and, especially, the physiological adaptations for life at such extremes are relatively poorly known and provide the scientifically curious with great incentive for study.
Almost all natural bodies of water bear fish life, the exceptions being very hot thermal ponds and extremely salt-alkaline lakes, such as the Dead Sea in Asia and the Great Salt Lake in North America. The present distribution of fishes is a result of the geological history and development of Earth as well as the ability of fishes to undergo evolutionary change and to adapt to the available habitats. Fishes may be seen to be distributed according to habitat and according to geographical area. Major habitat differences are marine and freshwater. For the most part, the fishes in a marine habitat differ from those in a freshwater habitat, even in adjacent areas, but some, such as the salmon, migrate from one to the other. The freshwater habitats may be seen to be of many kinds. Fishes found in mountain torrents, Arctic lakes, tropical lakes, temperate streams, and tropical rivers will all differ from each other, both in obvious gross structure and in physiological attributes. Even in closely adjacent habitats where, for example, a tropical mountain torrent enters a lowland stream, the fish fauna will differ. The marine habitats can be divided into deep ocean floors (benthic), mid-water oceanic (bathypelagic), surface oceanic (pelagic), rocky coast, sandy coast, muddy shores, bays, estuaries, and others. Also, for example, rocky coastal shores in tropical and temperate regions will have different fish faunas, even when such habitats occur along the same coastline.
Although much is known about the present geographical distribution of fishes, far less is known about how that distribution came about. Many parts of the fish fauna of the fresh waters of North America and Eurasia are related and undoubtedly have a common origin. The faunas of Africa and South America are related, extremely old, and probably an expression of the drifting apart of the two continents. The fauna of southern Asia is related to that of Central Asia, and some of it appears to have entered Africa. The extremely large shore-fish faunas of the Indian and tropical Pacific oceans comprise a related complex, but the tropical shore fauna of the Atlantic, although containing Indo-Pacific components, is relatively limited and probably younger. The Arctic and Antarctic marine faunas are quite different from each other. The shore fauna of the North Pacific is quite distinct, and that of the North Atlantic more limited and probably younger. Pelagic oceanic fishes, especially those in deep waters, are similar the world over, showing little geographical isolation in terms of family groups. The deep oceanic habitat is very much the same throughout the world, but species differences do exist, showing geographical areas determined by oceanic currents and water masses.
All aspects of the life of a fish are closely correlated with adaptation to the total environment, physical, chemical, and biological. In studies, all the interdependent aspects of fish, such as behaviour, locomotion, reproduction, and physical and physiological characteristics, must be taken into account.
Correlated with their adaptation to an extremely wide variety of habitats is the extremely wide variety of life cycles that fishes display. The great majority hatch from relatively small eggs a few days to several weeks or more after the eggs are scattered in the water. Newly hatched young are still partially undeveloped and are called larvae until body structures such as fins, skeleton, and some organs are fully formed. Larval life is often very short, usually less than a few weeks, but it can be very long, some lampreys continuing as larvae for at least five years. Young and larval fishes, before reaching sexual maturity, must grow considerably, and their small size and other factors often dictate that they live in a habitat different than that of the adults. For example, most tropical marine shore fishes have pelagic larvae. Larval food also is different, and larval fishes often live in shallow waters, where they may be less exposed to predators.
After a fish reaches adult size, the length of its life is subject to many factors, such as innate rates of aging, predation pressure, and the nature of the local climate. The longevity of a species in the protected environment of an aquarium may have nothing to do with how long members of that species live in the wild. Many small fishes live only one to three years at the most. In some species, however, individuals may live as long as 10 or 20 or even 100 years.
Fish behaviour is a complicated and varied subject. As in almost all animals with a central nervous system, the nature of a response of an individual fish to stimuli from its environment depends upon the inherited characteristics of its nervous system, on what it has learned from past experience, and on the nature of the stimuli. Compared with the variety of human responses, however, that of a fish is stereotyped, not subject to much modification by “thought” or learning, and investigators must guard against anthropomorphic interpretations of fish behaviour.
Fishes perceive the world around them by the usual senses of sight, smell, hearing, touch, and taste and by special lateral line water-current detectors. In the few fishes that generate electric fields, a process that might best be called electrolocation aids in perception. One or another of these senses often is emphasized at the expense of others, depending upon the fish’s other adaptations. In fishes with large eyes, the sense of smell may be reduced; others, with small eyes, hunt and feed primarily by smell (such as some eels).
Specialized behaviour is primarily concerned with the three most important activities in the fish’s life: feeding, reproduction, and escape from enemies. Schooling behaviour of sardines on the high seas, for instance, is largely a protective device to avoid enemies, but it is also associated with and modified by their breeding and feeding requirements. Predatory fishes are often solitary, lying in wait to dart suddenly after their prey, a kind of locomotion impossible for beaked parrot fishes, which feed on coral, swimming in small groups from one coral head to the next. In addition, some predatory fishes that inhabit pelagic environments, such as tunas, often school.
Sleep in fishes, all of which lack true eyelids, consists of a seemingly listless state in which the fish maintains its balance but moves slowly. If attacked or disturbed, most can dart away. A few kinds of fishes lie on the bottom to sleep. Most catfishes, some loaches, and some eels and electric fishes are strictly nocturnal, being active and hunting for food during the night and retiring during the day to holes, thick vegetation, or other protective parts of the environment.
Communication between members of a species or between members of two or more species often is extremely important, especially in breeding behaviour (see below Reproduction). The mode of communication may be visual, as between the small so-called cleaner fish and a large fish of a very different species. The larger fish often allows the cleaner to enter its mouth to remove gill parasites. The cleaner is recognized by its distinctive colour and actions and therefore is not eaten, even if the larger fish is normally a predator. Communication is often chemical, signals being sent by specific chemicals called pheromones.
Many fishes have a streamlined body and swim freely in open water. Fish locomotion is closely correlated with habitat and ecological niche (the general position of the animal to its environment).
Many fishes in both marine and fresh waters swim at the surface and have mouths adapted to feed best (and sometimes only) at the surface. Often such fishes are long and slender, able to dart at surface insects or at other surface fishes and in turn to dart away from predators; needlefishes, halfbeaks, and topminnows (such as killifish and mosquito fish) are good examples. Oceanic flying fishes escape their predators by gathering speed above the water surface, with the lower lobe of the tail providing thrust in the water. They then glide hundreds of yards on enlarged, winglike pectoral and pelvic fins. South American freshwater flying fishes escape their enemies by jumping and propelling their strongly keeled bodies out of the water.
So-called mid-water swimmers, the most common type of fish, are of many kinds and live in many habitats. The powerful fusiform tunas and the trouts, for example, are adapted for strong, fast swimming, the tunas to capture prey speedily in the open ocean and the trouts to cope with the swift currents of streams and rivers. The trout body form is well adapted to many habitats. Fishes that live in relatively quiet waters such as bays or lake shores or slow rivers usually are not strong, fast swimmers but are capable of short, quick bursts of speed to escape a predator. Many of these fishes have their sides flattened, examples being the sunfish and the freshwater angelfish of aquarists. Fish associated with the bottom or substrate usually are slow swimmers. Open-water plankton-feeding fishes almost always remain fusiform and are capable of rapid, strong movement (for example, sardines and herrings of the open ocean and also many small minnows of streams and lakes).
Bottom-living fishes are of many kinds and have undergone many types of modification of their body shape and swimming habits. Rays, which evolved from strong-swimming mid-water sharks, usually stay close to the bottom and move by undulating their large pectoral fins. Flounders live in a similar habitat and move over the bottom by undulating the entire body. Many bottom fishes dart from place to place, resting on the bottom between movements, a motion common in gobies. One goby relative, the mudskipper, has taken to living at the edge of pools along the shore of muddy mangrove swamps. It escapes its enemies by flipping rapidly over the mud, out of the water. Some catfishes, synbranchid eels, the so-called climbing perch, and a few other fishes venture out over damp ground to find more promising waters than those that they left. They move by wriggling their bodies, sometimes using strong pectoral fins; most have accessory air-breathing organs. Many bottom-dwelling fishes live in mud holes or rocky crevices. Marine eels and gobies commonly are found in such habitats and for the most part venture far beyond their cavelike homes. Some bottom dwellers, such as the clingfishes (Gobiesocidae), have developed powerful adhesive disks that enable them to remain in place on the substrate in areas such as rocky coasts, where the action of the waves is great.
The methods of reproduction in fishes are varied, but most fishes lay a large number of small eggs, fertilized and scattered outside of the body. The eggs of pelagic fishes usually remain suspended in the open water. Many shore and freshwater fishes lay eggs on the bottom or among plants. Some have adhesive eggs. The mortality of the young and especially of the eggs is very high, and often only a few individuals grow to maturity out of hundreds, thousands, and in some cases millions of eggs laid.
Males produce sperm, usually as a milky white substance called milt, in two (sometimes one) testes within the body cavity. In bony fishes a sperm duct leads from each testis to a urogenital opening behind the vent or anus. In sharks and rays and in cyclostomes the duct leads to a cloaca. Sometimes the pelvic fins are modified to help transmit the milt to the eggs at the female’s vent or on the substrate where the female has placed them. Sometimes accessory organs are used to fertilize females internally—for example, the claspers of many sharks and rays.
In the females the eggs are formed in two ovaries (sometimes only one) and pass through the ovaries to the urogenital opening and to the outside. In some fishes the eggs are fertilized internally but are shed before development takes place. Members of about a dozen families each of bony fishes (teleosts) and sharks bear live young. Many skates and rays also bear live young. In some bony fishes the eggs simply develop within the female, the young emerging when the eggs hatch (ovoviviparous). Others develop within the ovary and are nourished by ovarian tissues after hatching (viviparous). There are also other methods utilized by fishes to nourish young within the female. In all live-bearers the young are born at a relatively large size and are few in number. In one family of primarily marine fishes, the surfperches from the Pacific coast of North America, Japan, and Korea, the males of at least one species are born sexually mature, although they are not fully grown.
Some fishes are hermaphroditic—an individual producing both sperm and eggs, usually at different stages of its life. Self-fertilization, however, is probably rare.
Successful reproduction and, in many cases, defense of the eggs and the young are assured by rather stereotypical but often elaborate courtship and parental behaviour, either by the male or the female or both. Some fishes prepare nests by hollowing out depressions in the sand bottom (cichlids, for example), build nests with plant materials and sticky threads excreted by the kidneys (sticklebacks), or blow a cluster of mucus-covered bubbles at the water surface (gouramis). The eggs are laid in these structures. Some varieties of cichlids and catfishes incubate eggs in their mouths.
Some fishes, such as salmon, undergo long migrations from the ocean and up large rivers to spawn in the gravel beds where they themselves hatched (anadromous fishes). Some, such as the freshwater eels (family Anguillidae), live and grow to maturity in fresh water and migrate to the sea to spawn (catadromous fishes). Other fishes undertake shorter migrations from lakes into streams, within the ocean, or enter spawning habitats that they do not ordinarily occupy in other ways.
The basic structure and function of the fish body are similar to those of all other vertebrates. The usual four types of tissues are present: surface or epithelial, connective (bone, cartilage, and fibrous tissues, as well as their derivative, blood), nerve, and muscle tissues. In addition, the fish’s organs and organ systems parallel those of other vertebrates.
The typical fish body is streamlined and spindle-shaped, with an anterior head, a gill apparatus, and a heart, the latter lying in the midline just below the gill chamber. The body cavity, containing the vital organs, is situated behind the head in the lower anterior part of the body. The anus usually marks the posterior termination of the body cavity and most often occurs just in front of the base of the anal fin. The spinal cord and vertebral column continue from the posterior part of the head to the base of the tail fin, passing dorsal to the body cavity and through the caudal (tail) region behind the body cavity. Most of the body is of muscular tissue, a high proportion of which is necessitated by swimming. In the course of evolution this basic body plan has been modified repeatedly into the many varieties of fish shapes that exist today.
The skeleton forms an integral part of the fish’s locomotion system, as well as serving to protect vital parts. The internal skeleton consists of the skull bones (except for the roofing bones of the head, which are really part of the external skeleton), the vertebral column, and the fin supports (fin rays). The fin supports are derived from the external skeleton but will be treated here because of their close functional relationship to the internal skeleton. The internal skeleton of cyclostomes, sharks, and rays is of cartilage; that of many fossil groups and some primitive living fishes is mostly of cartilage but may include some bone. In place of the vertebral column, the earliest vertebrates had a fully developed notochord, a flexible stiff rod of viscous cells surrounded by a strong fibrous sheath. During the evolution of modern fishes the rod was replaced in part by cartilage and then by ossified cartilage. Sharks and rays retain a cartilaginous vertebral column; bony fishes have spool-shaped vertebrae that in the more primitive living forms only partially replace the notochord. The skull, including the gill arches and jaws of bony fishes, is fully, or at least partially, ossified. That of sharks and rays remains cartilaginous, at times partially replaced by calcium deposits but never by true bone.
The supportive elements of the fins (basal or radial bones or both) have changed greatly during fish evolution. Some of these changes are described in the section below (Evolution and paleontology). Most fishes possess a single dorsal fin on the midline of the back. Many have two and a few have three dorsal fins. The other fins are the single tail and anal fins and paired pelvic and pectoral fins. A small fin, the adipose fin, with hairlike fin rays, occurs in many of the relatively primitive teleosts (such as trout) on the back near the base of the caudal fin.
The skin of a fish must serve many functions. It aids in maintaining the osmotic balance, provides physical protection for the body, is the site of coloration, contains sensory receptors, and, in some fishes, functions in respiration. Mucous glands, which aid in maintaining the water balance and offer protection from bacteria, are extremely numerous in fish skin, especially in cyclostomes and teleosts. Since mucous glands are present in the modern lampreys, it is reasonable to assume that they were present in primitive fishes, such as the ancient Silurian and Devonian agnathans. Protection from abrasion and predation is another function of the fish skin, and dermal (skin) bone arose early in fish evolution in response to this need. It is thought that bone first evolved in skin and only later invaded the cartilaginous areas of the fish’s body, to provide additional support and protection. There is some argument as to which came first, cartilage or bone, and fossil evidence does not settle the question. In any event, dermal bone has played an important part in fish evolution and has different characteristics in different groups of fishes. Several groups are characterized at least in part by the kind of bony scales they possess.
Scales have played an important part in the evolution of fishes. Primitive fishes usually had thick bony plates or thick scales in several layers of bone, enamel, and related substances. Modern teleost fishes have scales of bone, which, while still protective, allow much more freedom of motion in the body. A few modern teleosts (some catfishes, sticklebacks, and others) have secondarily acquired bony plates in the skin. Modern and early sharks possessed placoid scales, a relatively primitive type of scale with a toothlike structure, consisting of an outside layer of enamel-like substance (vitrodentine), an inner layer of dentine, and a pulp cavity containing nerves and blood vessels. Primitive bony fishes had thick scales of either the ganoid or the cosmoid type. Cosmoid scales have a hard, enamel-like outer layer, an inner layer of cosmine (a form of dentine), and then a layer of vascular bone (isopedine). In ganoid scales the hard outer layer is different chemically and is called ganoin. Under this is a cosminelike layer and then a vascular bony layer. The thin, translucent bony scales of modern fishes, called cycloid and ctenoid (the latter distinguished by serrations at the edges), lack enameloid and dentine layers.
Skin has several other functions in fishes. It is well supplied with nerve endings and presumably receives tactile, thermal, and pain stimuli. Skin is also well supplied with blood vessels. Some fishes breathe in part through the skin, by the exchange of oxygen and carbon dioxide between the surrounding water and numerous small blood vessels near the skin surface.
Skin serves as protection through the control of coloration. Fishes exhibit an almost limitless range of colours. The colours often blend closely with the surroundings, effectively hiding the animal. Many fishes use bright colours for territorial advertisement or as recognition marks for other members of their own species, or sometimes for members of other species. Many fishes can change their colour to a greater or lesser degree, by movement of pigment within the pigment cells (chromatophores). Black pigment cells (melanophores), of almost universal occurrence in fishes, are often juxtaposed with other pigment cells. When placed beneath iridocytes or leucophores (bearing the silvery or white pigment guanine), melanophores produce structural colours of blue and green. These colours are often extremely intense, because they are formed by refraction of light through the needlelike crystals of guanine. The blue and green refracted colours are often relatively pure, lacking the red and yellow rays, which have been absorbed by the black pigment (melanin) of the melanophores. Yellow, orange, and red colours are produced by erythrophores, cells containing the appropriate carotenoid pigments. Other colours are produced by combinations of melanophores, erythrophores, and iridocytes.
The major portion of the body of most fishes consists of muscles. Most of the mass is trunk musculature, the fin muscles usually being relatively small. The caudal fin is usually the most powerful fin, being moved by the trunk musculature. The body musculature is usually arranged in rows of chevron-shaped segments on each side. Contractions of these segments, each attached to adjacent vertebrae and vertebral processes, bends the body on the vertebral joint, producing successive undulations of the body, passing from the head to the tail, and producing driving strokes of the tail. It is the latter that provides the strong forward movement for most fishes.
The digestive system, in a functional sense, starts at the mouth, with the teeth used to capture prey or collect plant foods. Mouth shape and tooth structure vary greatly in fishes, depending on the kind of food normally eaten. Most fishes are predacious, feeding on small invertebrates or other fishes and have simple conical teeth on the jaws, on at least some of the bones of the roof of the mouth, and on special gill arch structures just in front of the esophagus. The latter are throat teeth. Most predacious fishes swallow their prey whole, and the teeth are used for grasping and holding prey, for orienting prey to be swallowed (head first) and for working the prey toward the esophagus. There are a variety of tooth types in fishes. Some fishes, such as sharks and piranhas, have cutting teeth for biting chunks out of their victims. A shark’s tooth, although superficially like that of a piranha, appears in many respects to be a modified scale, while that of the piranha is like that of other bony fishes, consisting of dentine and enamel. Parrot fishes have beaklike mouths with short incisor-like teeth for breaking off coral and have heavy pavementlike throat teeth for crushing the coral. Some catfishes have small brushlike teeth, arranged in rows on the jaws, for scraping plant and animal growth from rocks. Many fishes (such as the Cyprinidae or minnows) have no jaw teeth at all but have very strong throat teeth.
Some fishes gather planktonic food by straining it from their gill cavities with numerous elongate stiff rods (gill rakers) anchored by one end to the gill bars. The food collected on these rods is passed to the throat, where it is swallowed. Most fishes have only short gill rakers that help keep food particles from escaping out the mouth cavity into the gill chamber.
Once reaching the throat, food enters a short, often greatly distensible esophagus, a simple tube with a muscular wall leading into a stomach. The stomach varies greatly in fishes, depending upon the diet. In most predacious fishes it is a simple straight or curved tube or pouch with a muscular wall and a glandular lining. Food is largely digested there and leaves the stomach in liquid form.
Between the stomach and the intestine, ducts enter the digestive tube from the liver and pancreas. The liver is a large, clearly defined organ. The pancreas may be embedded in it, diffused through it, or broken into small parts spread along some of the intestine. The junction between the stomach and the intestine is marked by a muscular valve. Pyloric ceca (blind sacs) occur in some fishes at this junction and have a digestive or absorptive function or both.
The intestine itself is quite variable in length, depending upon the fish’s diet. It is short in predacious forms, sometimes no longer than the body cavity, but long in herbivorous forms, being coiled and several times longer than the entire length of the fish in some species of South American catfishes. The intestine is primarily an organ for absorbing nutrients into the bloodstream. The larger its internal surface, the greater its absorptive efficiency, and a spiral valve is one method of increasing its absorption surface.
Sharks, rays, chimaeras, lungfishes, surviving chondrosteans, holosteans, and even a few of the more primitive teleosts have a spiral valve or at least traces of it in the intestine. Most modern teleosts have increased the area of the intestinal walls by having numerous folds and villi (fingerlike projections) somewhat like those in humans. Undigested substances are passed to the exterior through the anus in most teleost fishes. In lungfishes, sharks, and rays, it is first passed through the cloaca, a common cavity receiving the intestinal opening and the ducts from the urogenital system.
Oxygen and carbon dioxide dissolve in water, and most fishes exchange dissolved oxygen and carbon dioxide in water by means of the gills. The gills lie behind and to the side of the mouth cavity and consist of fleshy filaments supported by the gill arches and filled with blood vessels, which give gills a bright red colour. Water taken in continuously through the mouth passes backward between the gill bars and over the gill filaments, where the exchange of gases takes place. The gills are protected by a gill cover in teleosts and many other fishes but by flaps of skin in sharks, rays, and some of the older fossil fish groups. The blood capillaries in the gill filaments are close to the gill surface to take up oxygen from the water and to give up excess carbon dioxide to the water.
Most modern fishes have a hydrostatic (ballast) organ, called the swim bladder, that lies in the body cavity just below the kidney and above the stomach and intestine. It originated as a diverticulum of the digestive canal. In advanced teleosts, especially the acanthopterygians, the bladder has lost its connection with the digestive tract, a condition called physoclistic. The connection has been retained (physostomous) by many relatively primitive teleosts. In several unrelated lines of fishes, the bladder has become specialized as a lung or, at least, as a highly vascularized accessory breathing organ. Some fishes with such accessory organs are obligate air breathers and will drown if denied access to the surface, even in well-oxygenated water. Fishes with a hydrostatic form of swim bladder can control their depth by regulating the amount of gas in the bladder. The gas, mostly oxygen, is secreted into the bladder by special glands, rendering the fish more buoyant; the gas is absorbed into the bloodstream by another special organ, reducing the overall buoyancy and allowing the fish to sink. Some deep-sea fishes may have oils, rather than gas, in the bladder. Other deep-sea and some bottom-living forms have much-reduced swim bladders or have lost the organ entirely.
The swim bladder of fishes follows the same developmental pattern as the lungs of land vertebrates. There is no doubt that the two structures have the same historical origin in primitive fishes. More or less intermediate forms still survive among the more primitive types of fishes, such as the lungfishes Lepidosiren and Protopterus.
The circulatory, or blood vascular, system consists of the heart, the arteries, the capillaries, and the veins. It is in the capillaries that the interchange of oxygen, carbon dioxide, nutrients, and other substances such as hormones and waste products takes place. The capillaries lead to the veins, which return the venous blood with its waste products to the heart, kidneys, and gills. There are two kinds of capillary beds: those in the gills and those in the rest of the body. The heart, a folded continuous muscular tube with three or four saclike enlargements, undergoes rhythmic contractions and receives venous blood in a sinus venosus. It passes the blood to an auricle and then into a thick muscular pump, the ventricle. From the ventricle the blood goes to a bulbous structure at the base of a ventral aorta just below the gills. The blood passes to the afferent (receiving) arteries of the gill arches and then to the gill capillaries. There waste gases are given off to the environment, and oxygen is absorbed. The oxygenated blood enters efferent (exuant) arteries of the gill arches and then flows into the dorsal aorta. From there blood is distributed to the tissues and organs of the body. One-way valves prevent backflow. The circulation of fishes thus differs from that of the reptiles, birds, and mammals in that oxygenated blood is not returned to the heart prior to distribution to the other parts of the body.
The primary excretory organ in fishes, as in other vertebrates, is the kidney. In fishes some excretion also takes place in the digestive tract, skin, and especially the gills (where ammonia is given off). Compared with land vertebrates, fishes have a special problem in maintaining their internal environment at a constant concentration of water and dissolved substances, such as salts. Proper balance of the internal environment (homeostasis) of a fish is in a great part maintained by the excretory system, especially the kidney.
The kidney, gills, and skin play an important role in maintaining a fish’s internal environment and checking the effects of osmosis. Marine fishes live in an environment in which the water around them has a greater concentration of salts than they can have inside their body and still maintain life. Freshwater fishes, on the other hand, live in water with a much lower concentration of salts than they require inside their bodies. Osmosis tends to promote the loss of water from the body of a marine fish and absorption of water by that of a freshwater fish. Mucus in the skin tends to slow the process but is not a sufficient barrier to prevent the movement of fluids through the permeable skin. When solutions on two sides of a permeable membrane have different concentrations of dissolved substances, water will pass through the membrane into the more concentrated solution, while the dissolved chemicals move into the area of lower concentration (diffusion).
The kidney of freshwater fishes is often larger in relation to body weight than that of marine fishes. In both groups the kidney excretes wastes from the body, but the kidney of freshwater fishes also excretes large amounts of water, counteracting the water absorbed through the skin. Freshwater fishes tend to lose salt to the environment and must replace it. They get some salt from their food, but the gills and skin inside the mouth actively absorb salt from water passed through the mouth. This absorption is performed by special cells capable of moving salts against the diffusion gradient. Freshwater fishes drink very little water and take in little water with their food.
Marine fishes must conserve water, and therefore their kidneys excrete little water. To maintain their water balance, marine fishes drink large quantities of seawater, retaining most of the water and excreting the salt. Most nitrogenous waste in marine fishes appears to be secreted by the gills as ammonia. Marine fishes can excrete salt by clusters of special cells (chloride cells) in the gills.
There are several teleosts—for example, the salmon—that travel between fresh water and seawater and must adjust to the reversal of osmotic gradients. They adjust their physiological processes by spending time (often surprisingly little time) in the intermediate brackish environment.
Marine hagfishes, sharks, and rays have osmotic concentrations in their blood about equal to that of seawater and so do not have to drink water nor perform much physiological work to maintain their osmotic balance. In sharks and rays the osmotic concentration is kept high by retention of urea in the blood. Freshwater sharks have a lowered concentration of urea in the blood.
Endocrine glands secrete their products into the bloodstream and body tissues and, along with the central nervous system, control and regulate many kinds of body functions. Cyclostomes have a well-developed endocrine system, and presumably it was well developed in the early Agnatha, ancestral to modern fishes. Although the endocrine system in fishes is similar to that of higher vertebrates, there are numerous differences in detail. The pituitary, the thyroid, the suprarenals, the adrenals, the pancreatic islets, the sex glands (ovaries and testes), the inner wall of the intestine, and the bodies of the ultimobranchial gland make up the endocrine system in fishes. There are some others whose function is not well understood. These organs regulate sexual activity and reproduction, growth, osmotic pressure, general metabolic activities such as the storage of fat and the utilization of foodstuffs, blood pressure, and certain aspects of skin colour. Many of these activities are also controlled in part by the central nervous system, which works with the endocrine system in maintaining the life of a fish. Some parts of the endocrine system are developmentally, and undoubtedly evolutionarily, derived from the nervous system.
As in all vertebrates, the nervous system of fishes is the primary mechanism coordinating body activities, as well as integrating these activities in the appropriate manner with stimuli from the environment. The central nervous system, consisting of the brain and spinal cord, is the primary integrating mechanism. The peripheral nervous system, consisting of nerves that connect the brain and spinal cord to various body organs, carries sensory information from special receptor organs such as the eyes, internal ears, nares (sense of smell), taste glands, and others to the integrating centres of the brain and spinal cord. The peripheral nervous system also carries information via different nerve cells from the integrating centres of the brain and spinal cord. This coded information is carried to the various organs and body systems, such as the skeletal muscular system, for appropriate action in response to the original external or internal stimulus. Another branch of the nervous system, the autonomic nervous system, helps to coordinate the activities of many glands and organs and is itself closely connected to the integrating centres of the brain.
The brain of the fish is divided into several anatomical and functional parts, all closely interconnected but each serving as the primary centre of integrating particular kinds of responses and activities. Several of these centres or parts are primarily associated with one type of sensory perception, such as sight, hearing, or smell (olfaction).
The sense of smell is important in almost all fishes. Certain eels with tiny eyes depend mostly on smell for location of food. The olfactory, or nasal, organ of fishes is located on the dorsal surface of the snout. The lining of the nasal organ has special sensory cells that perceive chemicals dissolved in the water, such as substances from food material, and send sensory information to the brain by way of the first cranial nerve. Odour also serves as an alarm system. Many fishes, especially various species of freshwater minnows, react with alarm to a chemical released from the skin of an injured member of their own species.
Many fishes have a well-developed sense of taste, and tiny pitlike taste buds or organs are located not only within their mouth cavities but also over their heads and parts of their body. Catfishes, which often have poor vision, have barbels (“whiskers”) that serve as supplementary taste organs, those around the mouth being actively used to search out food on the bottom. Some species of naturally blind cave fishes are especially well supplied with taste buds, which often cover most of their body surface.
Sight is extremely important in most fishes. The eye of a fish is basically like that of all other vertebrates, but the eyes of fishes are extremely varied in structure and adaptation. In general, fishes living in dark and dim water habitats have large eyes, unless they have specialized in some compensatory way so that another sense (such as smell) is dominant, in which case the eyes will often be reduced. Fishes living in brightly lighted shallow waters often will have relatively small but efficient eyes. Cyclostomes have somewhat less elaborate eyes than other fishes, with skin stretched over the eyeball perhaps making their vision somewhat less effective. Most fishes have a spherical lens and accommodate their vision to far or near subjects by moving the lens within the eyeball. A few sharks accommodate by changing the shape of the lens, as in land vertebrates. Those fishes that are heavily dependent upon the eyes have especially strong muscles for accommodation. Most fishes see well, despite the restrictions imposed by frequent turbidity of the water and by light refraction.
Fossil evidence suggests that colour vision evolved in fishes more than 300 million years ago, but not all living fishes have retained this ability. Experimental evidence indicates that many shallow-water fishes, if not all, have colour vision and see some colours especially well, but some bottom-dwelling shore fishes live in areas where the water is sufficiently deep to filter out most if not all colours, and these fishes apparently never see colours. When tested in shallow water, they apparently are unable to respond to colour differences.
Sound perception and balance are intimately associated senses in a fish. The organs of hearing are entirely internal, located within the skull, on each side of the brain and somewhat behind the eyes. Sound waves, especially those of low frequencies, travel readily through water and impinge directly upon the bones and fluids of the head and body, to be transmitted to the hearing organs. Fishes readily respond to sound; for example, a trout conditioned to escape by the approach of fishermen will take flight upon perceiving footsteps on a stream bank even if it cannot see a fisherman. Compared with humans, however, the range of sound frequencies heard by fishes is greatly restricted. Many fishes communicate with each other by producing sounds in their swim bladders, in their throats by rasping their teeth, and in other ways.
A fish or other vertebrate seldom has to rely on a single type of sensory information to determine the nature of the environment around it. A catfish uses taste and touch when examining a food object with its oral barbels. Like most other animals, fishes have many touch receptors over their body surface. Pain and temperature receptors also are present in fishes and presumably produce the same kind of information to a fish as to humans. Fishes react in a negative fashion to stimuli that would be painful to human beings, suggesting that they feel a sensation of pain.
An important sensory system in fishes that is absent in other vertebrates (except some amphibians) is the lateral line system. This consists of a series of heavily innervated small canals located in the skin and bone around the eyes, along the lower jaw, over the head, and down the mid-side of the body, where it is associated with the scales. Intermittently along these canals are located tiny sensory organs (pit organs) that apparently detect changes in pressure. The system allows a fish to sense changes in water currents and pressure, thereby helping the fish to orient itself to the various changes that occur in the physical environment.
Tuim-de-asa-amarela.
Canary-winged parakeetA.
Tuim-de-asa-amarela, fotografado em Brasília, Brasil (Brazil).
geris versicolorus (Müller, 1776) ou Brotogeris chiriri chiriri - (Yellow-chevroned Parakeet): periquito-de-asa-amarela; canary-winged parakeet
Maritaca fotografada em Brasília, Brasil.
Periquito-de-asa-amarela; canary-winged parakeet.
Brotogeris versicolurus.
1. FICHA DO BICHO:
Nomes vulgares: Periquito-do-encontro-amarelo; Periquito-de-asa-amarela; Periquito-de-asas-amarelas; Periquito-estrela; Cotorra-de-las-amarillas (Espanha); Canary-winged-parakeet ou Yellow-chevroned-parakeet (EUA).
Nome científico: Brotogeris versicolorus chiriri (Vieillot, 1818)
Origem do Nome:"Periquito", origina-se do espanhol, periquillo. O termo designa aves da família dos Psittacidae (Psitacídeos).
Ordem: Aves
Família: Psittacidae (Psitacídeos)
Sub-gamília: Psittacinae
Gênero: Brotogeris spp.
Espécie: Brotogeris versicolorus chiriri (Vieillot, 1818). É uma subespécie do B. versicolorus (P.L.S. Muller, 1776), que pode ser encontrada também, como o nome de Psittacus versicolorus (Muller, 1776). Existem outras espécies como por exemplo, a B. chrysopterus (Tuipara-de-asa-laranja); B. sanctithomae (Tuipara-estrelinha); B. versicolorus (Periquito-de-asa-branca); B. viridissimus (Periquito-verde); B. tirica (Periquito-rei) entre outras. Ver site: www.vidadecao.com.br/cao/index2.asp?menu=curiosidade_peri...
geris versicolorus (Müller, 1776): periquito-de-asa-amarela; canary-winged parakeet
O colorido amarelo da asa, nas coberteiras superiores das rêmiges secundárias, e o amarelo-esverdeado da face ventral das rectrizes permitem a fácil identificação desta espécie. Apesar de ser menos abundante do que B. viridissimus, pode formar com ela bandos mistos. Nos E. U. da América do Norte, entre 1968 e 1974, houve importação de B. versicolorus, principalmente originários do Peru; alguns casais escaparam das gaiolas (ou foram soltos) e reproduziram-se na natureza, compondo atualmente bandos urbanos na Flórida, na Califórnia e em Porto Rico.
Alimentação: frutos, sementes, flores e néctar.
Nidificação: constroem o ninho em cavidades de árvores ou escavados em cupinzeiros arborícolas. Em áreas urbanas podem utilizar também os espaços sob telhas das edificações. Observações feitas em cativeiro mencionam 5 ovos brancos, medindo cerca de 23 x 19 mm e registram 26 dias para o tempo de incubação, que é tarefa da fêmea. Os filhotes deixam o ninho cerca de 8 semanas após o nascimento e são alimentados pelos pais com sementes e frutos regurgitados, mesmo após haverem abandonado o ninho.
Hábitat: campos com vegetação baixa e ilhas de matas intercaladas, bem como matas ciliares e cerradões.
Ver site: bibvirt.futuro.usp.br/especiais/aves_no_campus/f_psittaci...
Ipê-Roxo Bola (Tabebuia impetiginosa) -
Pau D'Arco Bark.
Na Asa Norte, em frente ao Setor Bancário Norte, em Brasília, Brasil.
At Asa Norte, in front of the Setor Bancário Norte, in Brasília, Brazil.
Recebe este nome em razão da forma de seus cachos de flores. Chega a atingir cerca de 8 a 12 metros de altura, dotada de copa alongada, tronco ereto de 60-90 cm de diâmetro com folhas compostas 5-folioladas e quando florido perde suas folhas. É encontrado desde o Piauí até Minas Gerais, Goiás e São Paulo, em geral nas regiões de cerrado e caatinga. Floresce nos meses de maio a agosto. Existem, ainda, outras espécies de ipê roxo, como o T. heptaphylla.Sua Madeira é muito pesada (densidade 0,96g/cm3) muito dura ao corte, resistente ao ataque de organismos xilófagos.
Nomes populares:
Ipê-roxo, Pau-d’arco-roxo, Ipê-roxo-de-bola.
Ipê roxo (Tabebuia avellanedae)
Nomes populares: ipê-roxo, pau-d’arco-roxo, ipê-roxo-da-mata, ipê-preto, ipê-rosa, ipê-comum, ipê-cavatã, lapacho, peúva, piúva.
Sabe-se que o ipê-roxo é a Tabebuia avellanedae, porém é muito comum haver confusão com a Tabebuia pentaphylla (ipê-rosa), inclusive alguns autores consideram a Tabebuia avellanedae e a Tabebuia impetiginosa da mesma espécie.
É o primeiro dos Ipês a florir no ano, inicia a floração em Junho, e pode durar até Agosto, conforme a árvore. Esta espécie se confunde bastante com outras também de flor roxa, como a Tabebuia impetiginosa e a Tabebuia heptaphylla, sendo considerado por alguns autores que a T. avellanedae e a T. impetiginosa seriam a mesma espécie. São muito utilizadas no paisagismo urbano, por sua beleza e desenvolvimento rápido.
É também utilizado contra as estomatites, úlceras de garganta e anemia. Anti-inflamatório, anti-cancerígeno, eczema.
O ipê (Ipê, em tupi-guarani, significa "árvore de casca grossa" e tabebuia é "pau" ou "madeira que flutua") - muitas vezes chamado de pau-d’arco - possui propriedades medicinais,sendo a casca em estudo para tratamentos. É apreciado pela qualidade de sua madeira, além de servir para fins ornamentais e decorativos. A árvore do ipê é alta, podendo chegar até 30 m (na cidade , em locais abertos chega a cerca de 10-15 m), bem copada e na época de floração perde totalmente as folhas para dar lugar às flores das mais variadas cores (brancas, amarelas roxas ou rosa) com belas manchas coloridas. É uma arvore originária do cerrado, não precisando de muita água, apenas no começo. É uma das árvores homologadas para plantio pelo fato de possuir raiz pivotante( para baixo), sem quebrar a calçada. Recomenda-se o plantio aonde haja bastante espaço para cima. Floresce no período de julho a setembro e frutifica de setembro a outubro. Destas sementes, que secam e abrem as vagens só nascem se estiverem secas. Os diversos tipos de ipê recebem os nomes conforme as cores de suas flores ou madeira. Os que mais se destacam são os seguintes: ipê-amarelo ou ipê comum, ipê-tabaco, ipê-branco, ipê-roxo ou ipê-rosa. Por muito tempo, o ipê foi considerado a árvore nacional brasileira. Contudo, no dia 7 de dezembro de 1978, a lei nº 6507 declara o pau-brasil a Árvore Nacional e, a flor do ipê, a flor do símbolo nacional.
Identifique seu Ipê:
* Amarelo : Folhas felpudas, pequenas em geral em formação de folhas por ramo.
* Roxo : Folhas lisas, as vezes serrilhadas na ponta, crescimento rápido.
* Branco : Folhas arredondadas.
* Rosa : Folhas grandes e suculentas ,talos verdes. crescimento rápido.A seguir, Texto, em português, do site "Catalão Notícias", que pode ser acessado no endereço portalcatalao.com.br/catalaonoticias/category_news.asp?ID...
Nesta época do ano, em que já se instala a “estação da seca” em Brasília, percebe-se em toda a parte o aumento de cores na vegetação. O sol pleno, entremeado pelo sibilar do vento frio, colabora com a natureza, fazendo desabrochar flores por toda parte, como se quisessem compensar-nos pela chegada da aridez desértica do inverno. De fato, tanta beleza nos distrai e nos alimenta com coragem para resistir bravamente à adversidade do clima, nos próximos cinco meses.
Uma das mais belas espécies que enfeitam a região é o ipê, adjetivado de acordo com a cor das suas flores. Há ipê amarelo, branco, rosa... Mas o mais famoso deles é o ipê roxo, cujo nome científico é Tabebuia avellanedae, com características muito interessantes. Por causa da sua coloração rosa e lilás intensos, é muito bem vindo em praças, jardins públicos e na arborização de ruas, avenidas, estradas e alamedas e também na recomposição da mata ciliar. Apesar de ser indicada para arborização urbana, não se recomenda plantar essa árvore em calçadas estreitas, com menos de dois metros e meio de largura, em locais com fiação aérea e ausência de recuo predial, porque a espécie atinge, na fase adulta, de cinco a oito metros de altura, com o raio da copa variando em torno de quatro a cinco metros.
Pouco antes da floração, suas folhas caem e surgem, no ápice dos ramos, magníficas panículas com numerosas flores tubulosas, perfumadas e atrativas para abelhas e pássaros. Por causa dessa formação tão parecida com bolas de flores nos galhos, os botânicos, que a descreveram pela primeira vez, deram-lhe o nome de 'árvore buquê'.
Vaidoso, o ipê roxo sai na frente dos de outras cores, mostrando sua beleza do início de junho até o final de setembro e, ainda, frutifica de julho a novembro. Versátil, adapta-se bem ao clima tropical úmido e subúmido, com inverno seco, mas sobrevive também no clima subtropical, com verão quente. Tem preferências por temperaturas entre 18 a 26 graus centígrados.
Mas, não é só de aparência que vive essa espécie. Praticamente toda a árvore produz e fornece matéria prima de excelente qualidade, que tem surpreendentes aplicações.
O tronco do ipê roxo tem sido utilizado em larga escala na construção civil, para confeccionar dormentes, tacos, portais, postes, eixos de roda, vigas; na construção naval como quilhas de navio; no mobiliário em geral, em batentes e degraus de escadas; em instrumentos musicais, bolas de boliche, entre outros.
Da casca, são extraídos ácidos, sais alcalinos e corante, que é usado para tingir algodão e seda, sem contar que está entre os produtos amazônicos mais procurados, com reconhecido poder medicinal.
Da entrecasca faz-se um chá que é usado no tratamento de gripes e depurativo do sangue.
As folhas são utilizadas contra úlceras sifilíticas e blenorrágicas. A espécie também tem propriedades anti-reumáticas e anti-anêmicas.
É tido como um poderoso auxiliar no combate a determinados tipos de tumores cancerígenos. É usado também como analgésico e como auxiliar no tratamento de doenças estomacais e da pele.
A extração predatória, realizada durante anos, quase levou a espécie à extinção. Devido à atuação governamental, reclamada pela comunidade científica, a produção, em princípio, é protegida, explorada e comercializada com a observância de critérios adequados. Um dos produtos mais importantes extraído do ipê roxo é o Lapachol, marca do princípio ativo naftoquinona, com reconhecida ação antiinflamatória, analgésica, antibiótica e antineoplásica [ataca qualquer tumor, benigno ou maligno].
O Laboratório Estatal de Pernambuco [Lafepe] é o proprietário da marca Lapachol desde 1978. Mas em 1969, já produzia e comercializava o produto como auxiliar no tratamento do câncer. Atualmente, a estatal pernambucana tem acordo com o Hospital Sírio Libanês, de São Paulo, na pesquisa de ensaios clínicos em seres humanos em tratamento de câncer, primordialmente o câncer de próstata.
Tão admirado pelos visitantes e transeuntes, cantado em versos e lido nas costumeiras crônicas da cidade, o Ipê Roxo já faz parte da tradicional paisagem brasiliense. Emociono-me diante dessa maravilha, carregada de flores cada vez mais belas, nas Quadras e Entrequadras, ao longo do Eixão, nos Parques e Chácaras que rodeiam a cidade, especialmente agora, quando contrasta com o brilho azulado e intenso do céu e o heróico e persistente verde dos gramados. É bom saber que ele só sairá de cena para dar lugar às bem aventuradas chuvas tardias da primavera, lá pelo mês de outubro.